Lasting machine wiper structure



July 13, 1943. y w, B N 2,324,128

LASTING MACHINE WIPER STRUCTURE Filed April 2, 1942 3 Sheets-Sheet l Ma a, l g,

July 13, 1943.

J. w. BARNA LASTING MACHINE VIPER STRUCTURE Filed April 2, 1942 3 Sheets-Sheet 2 QQNW July 13, 1943- u. w. BARNA 2,324,123

LASTING MACHINE WIPER STRUCTURE Filed, ADIil 2 1942 3 Sheets-Sheet 3 Patentecl July 13, 1943 UNITED STATES PATENT OFFICE LASTING MACHINE WIPER STRUCTURE- Chicago, Ill.

Application April 2, 1942, Serial N0. 4 37 ,33]:

2 Claims.

My invention relates to lasting machines and particularly to an improved arrangement, operation, and control of the wiper assembly, and the invention may be considered as covering a modification of the wiper assembly and operation disclosed in my Patent No. 2,144,582 dated January 17, 1939.

An important object of the invention is .to pro vide an arrangement in which the toe Wipers of a pair and the heel wipers of a pair are rigidly mounted on supports, and the side wipers are rigidly mounted on supports independently of the heel and toe wipers and movable on their supports width-wise of the machine and connected for such movement by the heel and toe wipers when the heel and toe Wipers are moved into wiping engagement.

A further object of the invention is to provide an arrangement in which, during a wiping operation, the side Wipers are rigidly held against vertical movement and can partake of only one movement, namely, width-wise of the machine.

Another object is to provide an arrangement in which the side wipers are rigidly held against any movement except in a direction width-wise of the machine, and with the side wipers engaging against the under sides of the heel and toe wipers to assist in supporting these wipers against downward pressure during lasting, or during the application of a sole to the lasted upper.

The above referred to and other features of the invention are incorporated in the structure shown on the drawings, in which:

Figure 1 is a plan View of a lasting machine with the wiper assembly, shown on Figure 3, removed;

Figure 2 is a section on plane IIII of Figure 1;

Figure 3 is a plan view of the wiper assembly; and

Figure 4 is an enlarged section on plane IVIV of Figure 3.

As the present invention concerns only a modified arrangement of the wiper assembly on a lasting machine such as is shown in my Patent No. 2,144,582, the drawings show only enough of the parts of such machine for understanding of the arrangement and operation of the modified wiper assembly.

Briefly describing the machine, it comprises the base [0 on which are mounted the transverse front and rear blocks II and I2, which receive the oppositely threaded ends of a shaft 13 journaled in the base [0 and operable by a hand wheel I 4. On the block H are mounted the opposed pedestals l5 and I5, each having a supporting post 16 extending upwardly therefrom for support of the respective toe Wipers at one point. For support of each toe wiper at another point, a supporting post I I is mounted on an arm I8 extending from the pedestals l5 and I5, respectively.

On the block l2 are the opposed pedestals l9 and I9, each post supporting a post 20 and an arm 2| from which extends a post 22, the posts 20 and 22 on each pedestal supporting the corresponding heel Wiper.

Referring to Figure 3, the toe wipers 23 and 23 are respectively mounted on the pedestals l5 and I5 as by means of screws 24 threading into the respective posts 16 and II. The heel wipers 25 and 25' are mounted on the pedestals l9 and 19 as by means of screws 26 threading into the posts 20 and 22 on the respective pedestals.

The pedestals l5 and I5 are shiftable on the block ll transversely of the machine and the pedestals l9 and I9 have similar movement on the block l2. The toe wiper 23 has the tongue 21 engageable in the channel 28 in the wiper 23, and the heel wiper 25 has the tongue 29 engageable in the channel 30 in the heel wiper 25' so that a continuous wiping edge is provided by the toe wipers around the toe part of an upper to be lasted, and the heel Wipers present a continuous wiping edge around the heel part of the upper.

Referring to Figure 1, tables 3| and 3| are located at opposite sides of the machine and mounted on the base ID for movement transversely of the machine, such movement being accomplished by means of toggle mechanism (not shown) in a manner fully disclosed in my patent referred to. On the table 3| are adjustably mounted the cam rails 32 and 33. Extending from the pedestal I5 is an arm 34 journaling rollers 35 engaging the cam rail 32, while the cam rail 33 is engaged by the rollers 36 on the arm 31 extending from the pedestal to. In a similar manner, cam rails 32' and 33' are provided on the table 3 l for the rollers on arms 3 and 31' extending from the pedestals l5 and [9. Before a lasting operation, the tables 3! and 3 l are moved outwardly by the toggle mechanism for lateraloutward movement of the pedestals for opening up of the wiper assembly for insertion of av last with an upper thereon, and then the tables are returned to their inner positions, whereafter the hand wheel 14 is turned for movement of the blocks H and I2 lon itudinally of the machine, the cam rails then causing simultaneous movement of the pedestals transversely of the machine so as to bring the toe wipers and heel wipers into wiping engagement with the upper to be lasted. 7

The side wiper supporting structure is mounted on the inner end of a slider plate 38 adjustable longitudinally on the base ID in a manner fully disclosed in my patent hereinbefore referred to. The U-shaped frame 39, secured to and extending upwardly from the inner end of the slider plate, adjustably seats in its legs the posts 40 and 40'. The post 40 terminates at its upper end in a head 4| having the horizontally extending channel 42 for the supporting bar 43 which, at. its inner end, mounts the side wiper 44. The post 40' terminates in the head 4| for supporting the bar 43 which, at its inner end, mounts the side wiper 44'.

The side wiper 44 has the channel 45 extending rearwardly in its upper side from the forward end thereof for receiving a tongue 46 extending rearwardly from the toe wiper 23, and the side wiper has the channel 47 in its upper-side extending forwardly from the rear end thereof to receive the tongue 48 extending forwardly from the heel wiper 25. The side wiper 44 has similar channels 45 and 41 for receiving the tongues 46 and 48' on the heel and toe wipers 23' and 25', respectively. The upper faces of the side wipers are flush with the upper faces of the heel and toe wipers, and the channels in the side wipers are inclined laterally as shown, so that when the heel and toe wipers are moved transversely and longitudinally of the machine, the side wipers will be I moved and cammed thereby for transverse or width-wise movement of the machine. As best shown on Figure 4, the side wiper 44 is rigidly secured to the inner end of the bar 43 as by means of a dowel pin 49 and a screw and the side wiper 4 3 is similarly secured to the bar 43 by a dowel pin 49 and a screw'50. With the side wipers thus rigidly secured to their supporting bars, which can partake of only transverse movement relative to the machine, the only movement the side wipers have during a wiping operation is width-wise of the machine, and the side wipers are thus moved by and with the heel and toe wipers as such wipers are expanded and contracted, the wiping edges 5| and 5| of the side wipers 44 and 44, respectively, merging into and coinciding at all times with the continuous wiping edges of the heel and toe wipers so that a continuous wiping edge is at all times presented by the wiper assembly to the upper which is being lasted. The side wipers are rigidly held in vertical adjustment by the supporting structure 39 for the posts 40 and 40', and side wipers, by their underlapping engagement with the heel and toe wipers, will resist downward pressure upon the wiper assembly during a wiping operation, and particularly during application of a pressure foot (not shown) to a sOle which is to be secured to an upper while the upper is being held by the wiper assembly to the last.

For protecting the side wipers against lateral outward pressure during a lasting operation, arms 52 and 53 extend from the heel and toe wipers 23 and 25, respectively, to engage with the outer edge portions 54 and 55 of the side wiper 44, and similar arms 52- and 53' extend from the heel and toe wipers 23 and 25', respectively, for engagement with the outer edge portions 54' and 55 of the wiper 44'. The edge surfaces 54 and 55 on the wiper 44 parallel the channels 45 and 41 in the wiper, and the edge surfaces 54 and 55' on the wiper 44' parallel the channels 45' and 41 in this wiper so that, when the wiper assembly is brought together for a wiping operation, the arm on the heel and toe wipers will be in engagement with the outer edge surfaces of the side wipers to back up the side wipers for resisting lateral outward pressure. Figure 3 shows the wiper assembly partly open preparatory to full closure thereof for a wiping operation. Closure of the assembly is effected by a turning of the hand wheel [4 for longitudinal movement of the toe and heel wipers toward each other, such movement causing simultaneous movement of the two toe wipers toward each other and the two heel wipers toward each other by virtu of the engagement of the rollers on the wiper supporting pedestals with the cam rails on the tables BI and 32, the tongue and inclined channel connection between the side wipers and the heel and toe wipers then causing the movement of the side wipers transversely or widthwise of the machine until the wiper assembly is fully closed for wiping of an upper on the last. During this wiping operation the vertically rigid side wipers resist, and assist the heel and toe wipers in resisting, the downward pressure, and the arms on the heel and toe wipers will back up the side wipers for resistance to outward lateral pressure.

I thus provide an improved wiping arrangement in which the side wipers, as well as the pairs of toe and heel wipers, respectively, are rigidly supported against vertical movement during a wiping operation, with the connections between the side wipers and heel and toe wipers such that the side wipers can move only in a fixed path width- Wise of the machine, and with the side wipers, which underlap the inner ends of the heel and toe wipers, taking up and resisting the entire pressure thereagainst and against the inner ends of the toe and heel wipers.

I do not desire to be limited to the exact construction, arrangement, and operation shown and described, as changes and modifications may be made without departin from the scope of the invention.

I claim as follows:

1. In a lasting machine, a pair of toe wipers, a pair of heel wipers, said pairs being movable bodily toward each other longitudinally of the machine, each of said toe wipers having a tongue integral therewith and extending rearwardly and inclined laterally outwardly, each of said heel wipers having a tongue integral therewith and extending forwardly therefrom and inclined laterally outwardly, a pair of side wipers and rigid supports therefor permitting movement thereof only widthwise of the machine, each side wiper having channels in its upper side laterally inclined to receive respectively the rearwardly and forwardly extending tongues on the corresponding toe and heel wipers whereby said side wipers support said tongues against downward pressure thereon, and means for simultaneously moving said toe and heel wiper pairs toward said other longitudinally of the machin whereby said inclined tongue and channel connections will effect lateral inward movement of said side wipers widthwise of the machine with the strain of such inward movement borne substantially equally by said toe and heel wipers.

2. In a lasting machine, a pair of toe wipers movable together longitudinally of the machine and movable toward and away from each other widthwise of the machine, each of said toe wipers having a tongue extending rearwardly therefrom and inclined laterally outwardly, a pair of heel wipers movable together longitudinally of the machine and movable toward or away from each other widthwise of the machine, each of said heel wipers having a tongue extending forwardly therefrom and inclined laterally outwardly, a side wiper at each side of the machine and a rigid support on which said side wiper has movement only widthwise of the machine, each side wiper having channels in its upper side laterally inclined to receive respectively the rearwardly and forwardly extending tongues on the corresponding toe and heel wipers whereby said side wipers support said tongues against downward pressure thereon, means for simultaneously moving said toe and heel pairs of wipers toward or away from each other longitudinally of the machine, means independent of said side wipers and controlled by the longitudinal movement of said toe and heel wiper pairs for causing the wipers of each of said pairs to move laterally widthwise of the machine toward or away from each other, whereby the widthwise movement of said toe and heel wipers and the camming effect of said inclined tongue and channel connections between said toe and heel wipers and said side wipers during longitudinal movement of said toe and heel wipers will result in widthwise movement of said side wipers.

JOSEPH W. BARNA. 

